I would say energy myself, and this is because energy plays a key role in all of these. With trophic levels energy is being transferred amongst the levels. Food chain's is a map of how the energy is passed along the chain. Food web is a web of how energy is transferred, and this is why I would say energy is a keyword.
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Answer:</h2><h2>Haha!</h2><h2>I don't know sorry (◔‿◔)</h2>
The only mutations<span> that matter to large-scale evolution are those that can be </span>passed on<span> to </span>offspring<span>. These occur in reproductive cells like eggs and sperm and are called germ line </span>mutations<span>. A single germ line </span>mutation<span> can have a range of effects: No change occurs in phenotype.</span>
Answer:
I think it might be the last one
I believe the correct answer from the choices listed above is option D. Sandstone and basalt can be changed by heat and pressure to form metamorphic rocks. They <span>are </span>formed<span> when </span>rocks<span> are close to some molten magma, and so get heated up. Hope this answers the question.</span>
